Method of manufacturing yokes for railway draft rigging



Dc. 19, 1922. 1,439,671. n w. KADEL.

METHOD 0F MANUFACTURING YOKES FOR RAILWAY DRAFT RIGGING.

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B. W. KADEL.

Dec. 19, 1922 2 SHEETS-SHEET 2.

FILED JUNE 28, I920.

Iumunmum Patented lice. lo, i922.

BYEES W. KABEL, OF BALTIMORE, MARYLAND, 'ASSIGNOR TO THE 'I'. SYMINGTON- COMPANY, OF YORK, N. Y., A CORPORATION OF DELAWARE.

iiinrnon or niinuriicmunine Yonne ron nauwer nenni' income.

Application led June 28, 1920. Serial No. 392,335.

To It whom 'it may concern.'

' Be it known that I, BYnns lV. Kamin, a citizen of the United States, residing at Baltimore, State of Maryland, have invented certain new and useful Improvements in Methods of Manufacturing Yokes for Railway Draft lSiigg-ing;4 and ll do hereby dervclare'the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine.4

The invention relates to a method of 'inan- 4 ufacturing.yokes for railway draft rigging,

andinore particularly to a method of manufacturing yokes ofthe so called vertical type from `forged or wrougl'it metal; and the "principal object of the invention, broadly i stated,is to' provide amethod of constructing verticaly yokes by a conil'iinedforging Aand welding process.

Ainother object ofthe invention is to provide a method of manufacturing vertical yokes of the conventional type, the finished article vof the said process having rnaXiinuni 25 strength perunit of weight.

`inother object of the invention is to provide a method"` for the manufacture of verticalyokes in which there is no waste due to loss of material, thereby affording an exceedingly economical method.

rlhe niethod or process will be hereinafter niore fully described in connection with the :iccmnpanying drawings, although it is to beunderstood that the steps ofthe process as hereinafter set forth do notv necessarily occur inthe sequence-in which they are described and may be expeditiously employed in other sequence than the one set forth.

Referring now to the drawings :y Figure l illustrates in plan view the pieces of bar stock from which they yoke is lproduced.

Fig. 2 is a plaiiview showing the same bar stock as'iilustiated in Fig. l after the same has been subjected to the forging or shaping steps of the process. n

Fig. 3 illustrates the three nieinbers from which the yoke is produced, said nienibei's being showny as shaped to finished forni, 50

prior to bending and assembling` to forni the complete yoke.l

Figa is a top plan view of the completed yoke. j j

Fig. 5 isa side elevation of the same, the paitsfbeing welded in assembled position.

:curved faces `bent upon themselves until the faces 7a adence characters. 1"

in carrying out my process l may cut from suitable bar stock three bars, l, l and 2, as illustrated. in Fig.` l. It will be understood that rthis bar stock may be of mild steel or wrought iron, and that the dimensions thereof may be varied iny accordancel with the size and dimensions desired of the finished article. The vbar 2 which forms the loop portion of the finished article or yoke` is preferably of slightly greater width andof Lconsiderably greater rlength than the'p'ortions of thebar stock l, l.

' Having the bars l and 2 of suitable length,

the next step which may be performed in carrying out my method is to forge, shape or head the same so as to form T-heads 3, 3 at opposite ends of the bar. And preferably at this time and by the saine process, 'I provide the bar 2 with the beveled faces 4, 4 to the rear of each T-head 3. The next step, withoutreference to* time sequence', vis to forge or'shape the bars 1,1 by' a suitable device so as to `provide thesaine on onefside with outwardly projecting lugs 5, 5 adjacent the opposite ends thereof, and to forni on the opposite side' a depressed seat Gter- Ininating adjacent the ends of each bar in 7, 7. T he bars l, l inay then be jacent the vcurved faces 'T abut. These hars are then subjected to a further `forging or shaping process by which the excess .metal at the central portion of each bai' l .is forced around the outer end of the slot 9 and preferably into the beveled forin as shown at 8.

It is to be observed that asa result of the bending of the bars l as hereinbefore described, the laterallyprojectingl lugs 5, 5 of each bar now project from opposite sides of the said bars and` form therewith T-headed members. y These lugs 5, 5 are subsequently bent inwardly, substantially at right angles to the plane of the body portion of the bars 1 so that at the completion of the preliminary forging' steps the bars 1 are in the form shown in Fig. 3. The bar 2 Vmay ,coincidently be shaped into the form shown in Fig'. 1t should be observed that inner or adjacent faces of the lugs 5, 5 and the inwardly projecting portions of the lheads are provided with inclined or beveled faces 11 and 10, respectively.

The three members of the yoke are then assembled in operative position, the beveled faces 11 of the lugs 5 being adapted to centact the correspondingly beveled faces et of the bar Q; and When the parts are assembled in this position they are, Welded together to form a single unitary structure. The faces T are also preferably Welded together.

The yoke `12 formed by my method comprises a hooded head 13 provided with side Walls 1i each of which is formed With a coupler key receiving slot 15 the forward ends of which are thickened or reinforced to provide additional bearing surface for the said key. The loop member 16 forms the upper and lower Walls of the hooded head 13 and extends rearwardly thereof so as to surround the cushioning` element of the draft rigging in the customary manner.

lVhile the yoke 12 is in fact madeof three pieces it will beobvious to those skilled in the art that by' following the method eutlined and by Welding' the parts together an exceedingly strong and simple yoke is produced. `In fact, the T-head formation hereinbefore described on bot-h the side members and the loop member of the yoke are when assembled so interlocked that the metal of the yoke is placed in direct shear under pull-v ing strains and all chance of the member separating is avoided.

Having now described my process, although it is to be understood that the terms used are employed in their ydescriptive and not in theirlimiting` sense, and that changes of various kinds may be made in the device Within the scope of the invention, l claim 1. The method of manufacturingr draft yokes which lconsists in forming` a plurality of bars with T-heads, arranging` two of said bars on opposite sides of the third bar so that the 'lheads thereof interlock, and finallywelding said bars together adjacent said interlocking heads.

2. The method of manufacturingg` draft yokes Which involves forgingv or shaping a plurality of bars to form lateral projections thereon, bending said bars. arranging` said vbars to form an annulus with the projections on one of said bars engaging the projections on the other of said bars, and Welding said bars in assembled position.

3. The method of manufacturinpV draft yokes which consists in subjecting a pluralily of steel bars to a forging or shaping process and forming` projecting` portions thereon bending said bars and interlocking said projecting portions, to form the hooded end of a yoke, and iinally Welding said bars in assembled position. i

4. rlhe method of manufacturing draft yokes Which consists in forginga member to form F,iheads thereon, bending said member into loop form, forging and bending` a plun rality of members to form side members engaging and interlocking' said 'T-heads, and Welding said side members to said loop.

5. The method of manufacturinp,` draft yokes which involves forging` a member to form T-heads thereon, bending' said member to open loop ferm, forging and bending a plurality of members to form side members with lateral projections thereon, interlocking' the projections on the side members With the projections on the loop member, and Welding said side members to said loop member.

(5. The method of manufacturing draft yokes which consists in shapingv a member to form lheads thereon, bending' said member to form an open loop, shaping a pluralityof members to form projections thereon, bendsaid last named members to bring` said projections opposite each other to form T-heads on each of said members and interlocking and Welding' said last named members to the opposite sides of said first named member.

7. rlhe method of manufacturing; draft yokes which consists in forging' a plurality of members to forni lateral projections thereon, bending` and shaping said projections to interlock and form an annulus, and subsequently .veldng' the interlocking projections to produce the hood member of the yoke,

lin testimony whereof l ailix my signature.

B. W. KABEL. 

